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What size ATT should I get?
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dadof7kids
 


Member Since: 23 Aug 2011
Location: sunny Doncaster
Posts: 1303

England 2014 Discovery 4 3.0 TDV6 HSE Lux Auto Firenze RedDiscovery 4
What size ATT should I get?

Which ATT and size should I put on? and i need the speedo to read the same.
255 / 50 /20 at mo

 java Black D3 gone : (
Club Lux : ) GONE : ( 
 
Post #206040511th Jun 2019 3:58 pm
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J@mes
 


Member Since: 10 Nov 2008
Location: Bomber County
Posts: 4547

England 2014 Discovery 4 3.0 SDV6 XS Auto Corris GreyDiscovery 4

275 45 20 👍
 2014 D4 XS
2005 D3 SE - Gone 
 
Post #206042811th Jun 2019 5:30 pm
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RRSTDV8
 


Member Since: 07 Apr 2014
Location: Here
Posts: 13541

United Kingdom 

Try this site and play around with sizes:

https://www.tyremen.co.uk/tyre-size-calculator

Even the 275/45/20 will give you a slight change in speedo according to the above site.
 Visiting from rrsport.co.uk
2012 RRS SDV6
2008 RRS TDV8
"When you fire that first shot, no matter how right you feel, you have no idea who's going to die! You don't know who's children are going to scream and burn. How many hearts will be broken. How many lives shattered. How much blood will spill, until everybody does what they were always going to have to do from the very beginning: SIT DOWN AND TALK!" 
 
Post #206043011th Jun 2019 5:45 pm
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dadof7kids
 


Member Since: 23 Aug 2011
Location: sunny Doncaster
Posts: 1303

England 2014 Discovery 4 3.0 TDV6 HSE Lux Auto Firenze RedDiscovery 4

Thumbs Up thanks will look
 java Black D3 gone : (
Club Lux : ) GONE : ( 
 
Post #206043711th Jun 2019 6:17 pm
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ronp
 


Member Since: 29 Nov 2006
Location: North Yorkshire
Posts: 15263

Scotland 2014 Discovery 4 3.0 SDV6 HSE Auto Corris GreyDiscovery 4

I had 285/50/20 LTZs on the D3 with no rubbing issues.
However, fitted them to the D4 and got rubbing on full lock (due to additional chassis extension on D4).
Got 'steering locks' made & fitted at Prospeed and all was ok.
I did loose a little in 'lock to lock' steering tho.

Speedo, was dead accurate with this size fitted.
 ...... always on the road less travelled 🚧  
Post #206043811th Jun 2019 6:27 pm
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mattgreen
 


Member Since: 15 Sep 2009
Location: Worksop
Posts: 211

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

I presume you have a D4? My D4 has 255/50R20 as it's standard tyres, I wanted some all-terrains which you seem to not be able to get on the 20" wheel so I picked up a set of D3 19 inch wheels and had some 255/55R19 General Grabber AT3 fitted to them.

The D3 19" fits perfectly on the D4 (I believe 19" is a valid D4 option anyway?)

I'd taken advice from someone who has the same setup on a D4 they use for expeditions/green-laning etc.

(The bonus is I don't need to get rid of my 19" snow chains that I kept from when I had a D3)
  
Post #206081513th Jun 2019 10:16 am
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DrRobH
 


Member Since: 10 Oct 2015
Location: Hampshire
Posts: 927

United Kingdom 

General Grabber AT3 are available in 255 55 20
No need to buy 19" rims
https://www.tyresdirectuk.co.uk/product/ge...255-55r20/
 Visitor from fullfatrr.com
RR Vogue SE 2011 4.4 TDV8
1974 Lightweight 
 
Post #206082013th Jun 2019 11:03 am
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dadof7kids
 


Member Since: 23 Aug 2011
Location: sunny Doncaster
Posts: 1303

England 2014 Discovery 4 3.0 TDV6 HSE Lux Auto Firenze RedDiscovery 4

Thumbs Up
 java Black D3 gone : (
Club Lux : ) GONE : ( 
 
Post #206087913th Jun 2019 1:37 pm
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mattgreen
 


Member Since: 15 Sep 2009
Location: Worksop
Posts: 211

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

DrRobH wrote:
General Grabber AT3 are available in 255 55 20
No need to buy 19" rims
https://www.tyresdirectuk.co.uk/product/ge...255-55r20/


Doh - I never thought to check for a slightly bigger size Sad

I'm guessing the 255/55 R20 is a slightly bigger overall diameter than the 255/50R20?
  
Post #206090113th Jun 2019 3:32 pm
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